AstroHart wrote...
Anything by aiue oka here like the hypnosis counseling series
I second this. The Bullied series and the Hypnotic Counseling series are a pretty good mix of art, plot, and NTR tropes. Their other work here is pretty good as well. Since the Hypnotic Counseling series is paid content, I'd suggest
Hynoptic Sexual Counseling 4 (Part 2).
If you want artists who frequently do NTR, then I'd go for
Aiya,
Arakure, and
Itou Eight.
Lastly, I'll list some of my favorites that come with unlimited. Note that I'm not into deep cutting NTR, so most of my recommendations will have so-so plot with pretty good art.